Question

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Answer 1

x = 12

Explanation:

is an isosceles triangle, the height divides it into two right triangles, we can solve with Pythagoras by finding 1/2 of x

1/2x =√[ (√45)² - 3²]

1/2x = √(45 - 9)

1/2x = √36

1/2x = 6

• now we find x

x = 6 × 2

x = 12